/*
 * Copyright (c) 2017 NCIC, Institute of Computing Technology, Chinese Academy of Sciences
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package org.ncic.bioinfo.sparkseq.algorithms.data.basic;

import java.util.HashMap;

/**
 * Author: wbc
 */
public class DefaultHashMap<K,V> extends HashMap<K,V> {

    public void setDefaultValue(V defaultValue) {
        this.defaultValue = defaultValue;
    }
    protected V defaultValue;
    public DefaultHashMap(V defaultValue) {
        this.defaultValue = defaultValue;
    }
    @Override
    public V get(Object k) {
        V v = super.get(k);
        return ((v == null) && !this.containsKey(k)) ? this.defaultValue : v;
    }

}
